The major pollutants to deplete ozone are</h2></div>

What is e-waste?</h2></div>

Value based questions.<br> What may be the consequences of deforestation?</h2></div>

The first atomic bomb was thrown over.</h2></div>

<span>When air is contaminated by ______________ substances which have a ________________ effect on both the _____…

Planting of trees on barren land is called </h2></div>

What is the farming called in which there is less use of chemicals and lesser production of waste?

Draw a labelled diagram of typical biogas plant.</h2></div>